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Statement of Cash Flows - Summary of Acquisitions/Divestments of Subsidiaries and Other Operations (Detail) - SEK (kr) kr in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Acquisitions And Divestments [Line Items] |  |  |
Acquisitions | kr (397) | kr (1,515) | kr (51,995)
Divestments | 86 | (625) | 307
Cash flow from business combination [member] |  |  |
Disclosure Of Acquisitions And Divestments [Line Items] |  |  |
Acquisitions | (141) | (1,309) | (51,734)
Divestments | 0 | (633) | 20
Acquisitions/divestments of other investments/associates [member] |  |  |
Disclosure Of Acquisitions And Divestments [Line Items] |  |  |
Acquisitions | (256) | (206) | (261)
Divestments | kr 86 | kr 8 | kr 287

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- Definition Cash flows from losing control of subsidiaries, classified as investing activities. + References No definition available. + Details
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- Definition Cash flows used in obtaining control of subsidiaries, classified as investing activities. + References No definition available. + Details
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Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
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- Definition Disclosure of acquisitions and divestments [line items] + References No definition available. + Details
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- Details
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- Details
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Period Type: |